Erratum to: JOM DOI: 10.1007/s11837-015-1717-9

This article was originally published without financial acknowledgements. They appear here in their entirety.

Acknowledgements

The research group acknowledge with grateful thanks the University of Lagos for providing the platform for the TETFUND RESEARCH GRANT (CRC/TETFUND/NO. 2011/2013) used for this research. We are also grateful for the assistance provided by Mr W.A. Ayoola, Olajide Kehinde and the staff of Metallurgical and Materials Engineering Laboratory and Foundry shop University of Lagos.